欺凌受害对初中生身体意象影响的纵向研究OACHSSCD

Objective:To examine the longitudinal impact of bullying victimization on body image among middle school students,and to explore the mediating roles of belief in a just world and the moderating role parent-child cohesion in this process.Methods:A total of 600 junior high school students were assessed at three time points(T1,T2,and T3)with a 6-month interval using the Delaware Bullying Victimization Scale-Student Version(DBVS-S),Belief in a Just World Scale(BJW),Parent-Child Closeness Scale(PCCS),and Body Image States Scale(BISS).A moderated mediation model was tested using the PROCESS macro.Results:The T1 DBVS-S total scores were negatively associated with the T3 BISS scores(β=-0.55,P＜0.001).The T2 BJW total scores par-tially mediated the relationship between the scores of T1 DBVS-S and T3 BISS(β=-0.11,P＜0.01),with an in-direct effect of-0.11(95%CI:-0.21--0.04),accounting for 19.9%of the total effect.The T2 PCCS total scores moderated the effect of T1 DBVS-S scores on T2 BJW scores(β=-0.47,P＜0.01).Further analysis showed that,in the high PCCS group,the T1 DBVS-S scores negatively predicted the T2 BJW scores(β=-0.65,P＜0.001).Conclusion:Bullying victimization may increasebody image problems among middle school students by weakening their belief in a just world.Parent-child cohesion moderatesthe this pathway,with stronger negative effects observed at higher levels of cohesion.